Investigation of temperature-dependent field emission from single crystal TiO2 nanorods

► Single crystal TiO2 nanorods were synthetized in large scale at 750 °C by CVD. ► Temperature-dependent field emission of TiO2 nanorods is first investigated. ► TiO2 nanorods show high thermal sensitivity in field emission. ► The turn-on field and the current are critically affected by the temperature.